Detroit Three Contracts Hit Expiry Day in Canada as U.S. Tariffs Hang Over Auto Jobs

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Canada’s Detroit Three contracts reach their formal expiry date on September 20, but the deadline is far more complicated than a three-company showdown at midnight. Ford and General Motors workers have already ratified new three-year agreements that take the industry beyond the old contracts. Stellantis remains the unresolved piece.

That distinction matters because the Stellantis negotiations are tangled up with something much larger than wages. More than 2,000 Brampton workers remain tied to the future of an idled assembly plant, while tariffs have altered the economics of moving vehicles and parts across the Canada-U.S. border. With Washington maintaining auto duties and President Donald Trump threatening another increase in 2027, this bargaining round has become a test of whether Canadian production commitments can survive a much less predictable North American auto market.

Expiry Day Is More Complicated Than It Looks

The September 20 deadline traces back to the three-year agreements negotiated by Unifor with Ford, General Motors and Stellantis in 2023. Those contracts established the common bargaining calendar that brought all three companies back to the table in 2026. Yet expiry day does not mean approximately the same thing at all three automakers. Unifor deliberately began the new round with Ford, using Canada’s traditional pattern-bargaining system to establish economic terms that could then be carried to GM and Stellantis.

Ford workers ratified their successor agreement in July, and GM workers approved theirs at the end of August. Ford’s new contract takes effect September 21. That leaves Stellantis as the major outstanding negotiation as the old agreements expire. For workers at already-settled operations, September 20 is largely the end of one contract cycle. For thousands of Stellantis employees, it marks a much less certain transition in which the future location of vehicle production has become as important as the wage package.

Ford Set the Pattern Before the Deadline Arrived

Ford became the pattern setter after negotiations formally opened June 22. Roughly 5,150 Unifor members were covered, including workers at Oakville, Windsor-area engine operations and parts-distribution facilities. Members ratified the agreement in July, with the Ford master agreement receiving 74 per cent support. The three-year contract provides general wage increases of three per cent in each year, along with pension, benefit, bonus and cost-of-living provisions.

The agreement was also notable for what it said about factories. Ford announced C$1.25 billion in planned Canadian manufacturing investment over the life of the contract, including C$700 million connected with engine production at Essex and C$550 million previously planned for Oakville. The company also forecast a third shift at Essex. In a bargaining round dominated by questions about where future vehicles and components will be built, those commitments gave Ford workers something beyond an hourly wage number: a clearer picture of how Canadian plants fit into the company’s North American manufacturing plans.

GM Ratification Added More Than $1 Billion in Investment Commitments

General Motors became Unifor’s second bargaining target, with negotiations covering more than 4,600 workers in Oshawa, St. Catharines, Woodstock and Ingersoll. Members approved new three-year agreements on August 30. The GM Canada master agreement received 80.5 per cent support, while workers covered by the separate CAMI agreement voted 96.5 per cent in favour. The contracts carried forward the economic pattern established at Ford while adding plant-specific commitments.

GM said planned investments in Oshawa and St. Catharines total approximately C$1.4 billion over the next three years. That includes another C$144 million to bring next-generation GMC Sierra Heavy-Duty production to Oshawa and C$215 million for a next-generation transmission program at St. Catharines. The picture is less comfortable at CAMI in Ingersoll, where the plant has been idled and most represented workers have been on indefinite layoff. That contrast illustrates why investment language has become central to bargaining: a ratified wage increase provides limited security when there is no regular production schedule behind it.

Stellantis Is the Unfinished File

Stellantis entered negotiations last, beginning talks with Unifor on September 1 for more than 9,000 represented employees in Canada. Ten days later, the union announced that bargaining had reached an impasse. The existing Stellantis agreement expires at 11:59 p.m. on September 20, making it the one Detroit Three contract where expiry arrives without a ratified replacement waiting on the other side.

Unifor says the central dispute is the future of Brampton Assembly, while it has also sought clarity regarding production plans at Windsor Assembly and Etobicoke Casting. According to the union, Stellantis offered only conditional acceptance of the Ford-established economic pattern in connection with its proposed approach to Brampton. Stellantis, meanwhile, has been examining alternatives for the idled site. The result is a bargaining dispute in which traditional questions about wages and benefits are intertwined with the much larger issue of whether one of Canada’s major assembly plants will continue building automobiles at all.

Brampton Has Become the Core of the Bargaining Dispute

Brampton’s importance goes well beyond one bargaining table. The plant was closed for retooling after production ended there, with plans originally tied to future electrified-vehicle manufacturing. In 2022, Ottawa announced support of up to C$529 million toward a C$3.6-billion Stellantis investment involving Brampton and Windsor, while Ontario committed up to C$513 million. Federal records later showed roughly C$222.4 million had been disbursed under that contribution agreement as of March 31, 2025.

The situation changed sharply when Stellantis announced in October 2025 that Jeep Compass production originally planned for Brampton would instead go to the company’s reopened Belvidere plant in Illinois. Ottawa subsequently paused further payments under the federal agreement and initiated a dispute-resolution process. For roughly 2,200 Unifor members associated with Brampton, the issue is therefore no longer simply when retooling ends. It is whether large-scale auto assembly returns. That question affects retirement planning, income-security provisions and the possibility of eventually returning from an unusually long layoff.

The Roshel Proposal Changes What Is Being Bargained Over

Another complication arrived when Stellantis confirmed a memorandum of understanding with Canadian armoured-vehicle manufacturer Roshel concerning a potential sale of the Brampton property. Reuters reported that Roshel is considering turning the location into a defence-manufacturing hub. Stellantis has described the proposal as a potential path toward sustainable activity at the site, while the transaction has not been finalized.

Unifor has taken a different position, arguing that the priority should remain restoring automobile production and expressing concern that a change of ownership could affect members’ contractual rights, pensions and employment prospects. That disagreement helps explain why Brampton has become so difficult to separate from the contract negotiations. A modern auto assembly plant sits at the centre of a network that can include parts makers, logistics operations, tool-and-die companies and other suppliers. Even if a different manufacturer creates employment at the property, the number, type and supply-chain reach of those jobs would not automatically be identical to the automotive operation that workers had expected to return.

A Strike Is Not Automatic When the Clock Reaches Midnight

The expiration of the Stellantis agreement at 11:59 p.m. does not mean workers automatically walk off the job one minute later. Unifor told members on September 16 that it would not be in a legal strike position when the contract expires because the union and Stellantis remain in Ontario’s statutory conciliation process. The union said strike action remains a possibility, but further steps would have to occur first.

Ontario labour law requires more than an expired agreement before a lawful strike can begin. The conciliation process must advance through the required stages, and a strike vote must receive support from more than 50 per cent of those voting. Unifor said the next step for members, if needed, would be strike-vote meetings. The union and Stellantis also agreed to extend existing income-security provisions for laid-off Brampton workers until either the parties reach a legal strike or lockout position or a renewal collective agreement takes effect. That makes expiry day significant, but it is not itself a strike deadline.

U.S. Tariffs Have Changed the Economics Behind the Negotiations

The 2026 bargaining round is unfolding under trade conditions that Canadian automakers did not face when the previous contracts were negotiated in 2023. The United States currently applies a 25 per cent Section 232 tariff to Canadian automobiles and trucks, although the value of U.S. content in CUSMA-compliant vehicles is exempt. CUSMA-compliant auto and truck parts are currently exempt from the corresponding 25 per cent parts tariff.

Canada has maintained its own automotive countermeasures. Since April 2025, Ottawa has imposed a 25 per cent tariff on non-CUSMA-compliant U.S.-made vehicles and on the non-Canadian and non-Mexican value of CUSMA-compliant vehicles imported from the United States. An additional layer of uncertainty appeared on August 24, when Trump threatened a 50 per cent tariff on Canadian cars, trucks and auto parts beginning January 1, 2027. That announced threat is not the same as a tariff already in force, but it complicates investment planning for factories whose economics depend heavily on cross-border trade.

Canadian Auto Jobs Are Exceptionally Exposed to U.S. Demand

Statistics Canada data illustrate why tariff policy matters so directly to assembly workers. In 2024, U.S. demand accounted for 76.4 per cent of the output and payroll jobs in Canada’s automobile and light-duty vehicle manufacturing industry. Statistics Canada estimated that roughly 27,000 jobs and C$4 billion in value added in that industry were connected to U.S. demand. More than 93 per cent of Canadian motor-vehicle exports went to the United States.

There were already signs of pressure in 2025. Canadian motor-vehicle exports to the U.S. fell 9.6 per cent from the previous year, while exports to countries other than the United States increased 14.6 per cent. From December 2024 to December 2025, employment in motor-vehicle-parts manufacturing declined 9.3 per cent, while motor-vehicle-manufacturing employment decreased 1.3 per cent. Those figures should not be attributed entirely to tariffs, because production cycles, model changes and plant-specific decisions also matter. They nevertheless show how quickly disruption in one market can travel through Canadian plants and supplier communities.

Canada Is Using Tariff Relief to Push Companies Toward Domestic Production

Ottawa has increasingly connected trade policy to automakers’ Canadian production decisions. Its automotive remission framework permits manufacturers operating in Canada to import defined quantities of U.S.-assembled vehicles without paying Canadian counter-tariffs, provided the companies meet production and investment conditions. The federal government has described the mechanism as an incentive to maintain manufacturing activity rather than simply as tariff relief.

The approach has already been adjusted when production plans changed. In October 2025, Ottawa reduced GM’s annual remission quota by 24.2 per cent and Stellantis’ by 50 per cent after changes affecting Canadian operations. In 2026, the government launched consultations on strengthening the framework, including proposals that could tie benefits more directly to domestic output and investment. For contract negotiations, this creates an unusual three-sided environment: automakers are weighing market economics, workers are bargaining for employment security, and government trade measures are increasingly linked to whether promised Canadian production actually occurs.

The Real Test After Expiry Day Will Be What Gets Built in Canada

The Ford and GM settlements show that wage gains and Canadian manufacturing commitments can still be negotiated in the current environment. Ford’s agreement includes billions of dollars when new and previously planned Canadian programs are considered, while GM’s contract cycle brought fresh commitments for Oshawa and St. Catharines. Yet the unresolved Stellantis dispute demonstrates that applying the same wage pattern across three companies does not guarantee the same level of production certainty at every plant.

Attention after September 20 will therefore remain on several concrete questions: whether Stellantis and Unifor can resolve Brampton’s status, what products and volumes are confirmed for Windsor and Etobicoke, and whether escalating U.S. tariffs alter automakers’ investment decisions again. CUSMA itself remains in force until 2036 despite its 2026 joint review, and Canada and the United States continue discussing sectoral auto tariffs. For Canadian autoworkers, however, the measure of stability is more immediate. A strong contract matters, but so do scheduled shifts, assigned products and assembly lines that are actually running.

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